Drain.



G. 1. DEHN.

DRAIN.

APPLICATION FILED MAR. 28, 1910.l

Ll?. I Patented May 18, 1915.

GEORGE J. IIIXEIIHN,V 0F GHIGAAEIC),V ILLINOIS.

DRAIN.

Speoieation of Letters Patent.

Patented Mayas?, 1915.

Application mea March as, 1910. serial No. 552,000.

drain-receiver to be properly' disposed with respect to the floor and sothat the receiverA may be connected to the sewer-pipe by a fitting oflpredetermined size. In practice, however, it frequently occurs that theHoor is not alwa s laid at the particular elevation it is inten ed tobe, or that the floor when laid and the sewer-pipe are not in correctrelation to permit the drain-receiver and trap to be connected to thesewer by the fitting which was intended to be used, and this diiicultyfrequently results in the necessity of re-laying a portion of thesewer-pipe or in imperfect drainage resulting from` im` properdisposition of the drain-receiver. In some instances, a fitting ofanother size must be provided and in others special fittings becomenecessary to overcome this difficulty. -The present invention designs toovercome this difliculty by providing an adjustable connection in thetrap-pipe which permits the drain-receiver to be accurately set incorrect position relatively to the floor andthe discharge terminal ofthe trap-pipe to be properly connected to the sewer pipe, despite anyvariation in the relative position of the sewer-pipe and the floor whichfre quently occurs in practice.

In practice, it has been found that in drain-traps havin a liquid-sealtherein for preventing gas rom. escaping from the sewer, when the systemis out of use for a .long time, the liquid evaporates and the trap isrendered ineffective to prevent es cape of gas from the sewer, and theinvention also designs to provide an'inproved drain-trap which comprisesa valve in the receiver-basin, which can be manipulated to close thetrap-pipe and prevent gases from escapin from the sewer when theliquid-seal is inoperative. A

The invention further designs to provide sti. drain trap and pipe ofimproved construc- The invention consists in the several novel featureshereinafter set forth and more partlcularly defined by claim at theconclu-sion hereof.

In the drawings-Figure 1 is a central section of an improved drain trapand receiver embodyin the invention. Fig.`2 is a horizontal section online 2 2 of Fig. 1. Fig. 3 is a section on line 3-3 of Fig. l. Fig. 4 isa perspective of the ring for closing the upper end of the drain-pipe,and to which the seat and cage ,for the back-water valve are secured.Fig. 5.is a perspective of a cage for the back-water valve. Fig. 6. is asection on line 6--6 of Fig. 1. Fig. 7 is a detail section on anenlarged scale of the seat for the back-water valve.

The improved drain-pipe comprises a section 11 having an upwardlyextending drain-receiving terminal and a section l2 having a trap-bend13 therein and a laterally extending discharge-terminal 14, which isadapted to be connectedto a seweripe. The liquid in the trap-bend formsa sea for preventing gases from escaping from the sewer through thedrain-receiving terminal of thedrain-pipe. A suitable connection 15extends upwardly from the laterally extending discharge-terminal 14 andis adapted to receive a vent-pipe, as well understood in the art. rlfheupwardly extending portion of section 12 of the drain-pipe is slightlyenlarged, as at 16, to receive the lower end of pipe-sectionv11, so thatone section of the pipe will telescope into the other and ,permitpipe-section 12 to 4be connected to the sewer-pipe and the section 11which carries the drain-receiver B, to be set in correct relation to theHoor. That is, if thev floor has been laid in any other than the exactrelation with` respect tothe sewer-pipe for a connection or fitting of acertain size, the. drain-pipe may be extended or, shortened by reason ofthe telescopic connection between the pipe-sections 11 and 12, to adaptthe fitting for making a proper connection between the sewer-pipe andthe receiver, leaving the. latter properly disposed with respect to thefloor, despite inaccuracies or variations in laying the sewer-pipe andHoor. The upper end of pipe-section 12 is, provided Withlugs or a ange17 to receive bolts 18. which are adapted to extend through a collar 19which is adapted to jam a packing ring or gasket 20, usually of elasticmaterial such as rubber, against the inner pipe and to form awater-tight connection between. the, telescopically connectedpipe-sections when they have been adjusted into the desired relativeposition. Thus, it will be seen that .the drain-pipe is readilyadaptable for use in buildings in which the sewer-pipe is laid differentdistances vbelow the floor or other structure from which the drainage isto be conducted to the sewer-pipe. The device is, therefore,

rendered adjustable .and the lnecessity of manufacturing differentAfittings according to the different distances between the floor and thesewer-pipe, is avoided. In order to increase the range of adjustment,pipe-section l1 is'formed with annular grooves 21 which facilitate thecutting of the pipe by suitable tools, so that it may be shortened tothe desired length when anl unusually short vertical section is desired.l

The upwardly extending inlet-terminal ofy and removably held therein toprovide access to the basin and the parts therein. The receiver-basin Bf is secured on the pipeange a4' b any suitable means, for example: themterlockingslip and wedge connection shown in Letters Patent of theTnited States, No. 935,000, granted to me' September 28, 1909. At eachside, the receiver is provided. with a suitable connec-` tion 127adapted for connection to a drainpipe, `when it is desired to dischargedrainvage from a basin or other receptacle 'into the drain-receiver B.By providing a connection 57 at each side of the receiver, a connectionmay be made at each side and vif but 'one connection or neither of theconnections is to be used, they can be closed by a plug bs.

A strainer D is removably sustained on a shoulder d in the receiver,some distance below the top C and lthe purpose of the internal strainerD is to catch matches or material likely to obstruct the passages inthedrain pipe or ,the back water valve.` Inpractice, it frequently occursvthat in order to dispose of matter which will not pass through thestrainer-topfC, the latter willA be lremoved and this `matter will beswept into the drain-receiver. In ,that'event, the` strainer Dywillcatch such matter and prevent the back-water valve and the tra frombecoming clogged thereby. The strainer D ca n be occasionally cleaned toprevent the .device from becoming clogged.

'engage the elastic seat and form a watertight closure, to preventanyliquid from being forced backwardly through the inlet terminal of thedrain-pipe.

yIn practice, it has been found that sometimes the water from the seweris caused to gurgle which resultsin fluttering the float valve, so thatthe latter will not 'eifectively prevent the back flow of the waterthrough the inlet terminal of the drain-pipe.

By providing an elastic seat-ring, the floatvalve adheres to the seatduring this gurgling action and effectively prevents backiow of thewater, and furthermore the elastic. seat-ring and ball ,form aneffective closure against back-pressure of water in -the drain-pipe.rIhe upper end of pipe-section 11 is enlarged, as at 11, to receive acage H for guiding the float-valve G. This cage comprises av ring lahaving linwardly extending wedge lugs h2 which are adapted to passthrough notches e2 between outwardly extending wedge-lugs e on thebottom of ring E, and by-slipping ring It on ring. E and then turningsaid ring relatively to ring E, said lugs may be broughtl into positionto wedge and interlock and to' removably secure the cage in position toguide the float valve. Guide-bars h are secured to the ring h and thebottom portions lof these bars serve to limit the downward movement ofthe float-valve, so thatA it'will not be displaced by water rushingdownwardly through the inlet-terminal of the trap-pipe.

The inlet-terminal yof section 1l of the trap-pipe extends above thebase of the receiverB tocollect sediment in the receiverbasin and causesthe lower 'portion of the receiver to remain llcd 'with water, whichtends to lower the temperature of, and preventundue evaporation of thewater in the drain-pipe. lIn practice, it hasv been found, however,thati'n some instances, where the drain-pipe is seldom or infre uentlyused to carry olf drainage, the liquid.' in the seal doesevaporate, sothat gases from the sewer will pass up through the drain-receiver, Toprevent this from occurring, the inlet-terminal ofthe drain-pipe isprovided with a register-valve which, when closed, will -prevent gasfrom passingto the receiverjfrom the sewer. `Thls register-valve Icomprises a perforated annular vertically extending wall provided withlugs i through which screws b5 pass, which secure the ring E on thedrain-pipe and also secure the body of the register-valve thereon. A topwall 3 is formed on l,the side-wall A rotary valvemember hasacylindrical side-wall 4 fitting against the inner face of perforatedwall and has perforations corresponding to those in said wall z', sothat when the openings in both Walls are in registry, drainage can passtherethrough into the upper end -of the drain-pipe. The rotatable memberof this valve is provided with a stem 5 which projects through top-wall3, and has secured thereto an arm or handle B whereby the` valve may beopened or closed. Stops 7 are provided to limit the play of the valve.The rotatable valve-member is conned vertically between the ring E andthe top-wall 3 of the valve-body. When, therefore, the drain is toremain out of use for a long time, or if the back-water valve shouldbecome'inoperative, the valve I may be closed and the escape of gas orwater from the sewer, when the liquid seal has become inoperative, willbe obviated.

The form. of valve set forth provides a. structure in which the openingsleading to the passage in the drain-pipe extend vertically, while thetop is closed, and resultantly, solid matter passing through strainer Dwill be directed to the bottom ofthe basin,l

and kept out of the drainfpipbe, thus preventing the latter frombecoming clogged.

This feature is an importantl one if theinf tei-nal strainer D isnot-employed, or if through over-sight itis not placed in the basin. Thecentral or that portion of this strainer, which. is disposed above theinletterminal of the drain-pipe, is imperforate and only perforatedaround its outer edge to direct the drainage to the outer portion of thebasin so the sediment will be retained in the basin, and the liquid willpass through the vertically extending openings in the register-valve.When the register-valve is not employed, the internal strainer with itsimlperforate central portion prevents soild matter from being depositedinto the inlet-terminal of the drain-pipe, and when the register-valveis employed, the accumulation of matter on the top of the valve, isprevented.

rIhe invention is not to be understood as restricted to the detailsshown and described,

since these may be modified within the scope of the appended claimswithout departing from the spirit and scope of the invention.

Having thus described theinvention, what I claim as new and desire tosecure by Letters Patent, is:

l. In' a drain, the combination of a receiver-basin, a drain-pipeconnected to receive drainage from said basin, a water-trap, aback-water valve, an upwardly extending register valve secured at theupper end of the inlet-terminal of the drain-pipe for preventing escapeof the gas through the drainpipe when the water trap is inoperative.

2. In a drain, the combination of a receiver-basin, a drain-pipeconnected to receive drainage from said basin, a water-trap, aback-water valve, and a register-valve comprising a body secured at theupper vend of the inlet-terminal of the drain-pipe, and having anupwardly extending perforated annular wall and a correspondinglyperforated coperating valve-member rotatably mounted in said body.

3. The combination of a drain-pipe having an upwardly extending inletterminal, a back-Water valve in said pipe, a ring secured yto said pipeand provided with a valve-seat,

a valve cage in said terminal, and a wedge and interlocking connectionbetween sald ring and said cage for removably securing the cage and ringtogether.

4. In a :Hoor drain, the combinationiof a receiver-basin, having an opentop, a strainer-top in said opening, and connections at either sidebelow said top, a drain-pipe connected to receive drainagefrom saidbasin and having a trap therein, shoulders onthe receiver-basin abovesaid inlet connections and the inlet terminal of the drain-pipe, a

